John Sung emphasizes the necessity of purifying the heart rather than focusing on outward appearances, as demonstrated in Mark 7. He critiques the Pharisees for their hypocrisy, highlighting that true defilement comes from within, not from external actions. Sung urges believers to seek inner transformation through repentance and the filling of the Holy Spirit, rather than adhering to mere traditions and rituals. He illustrates that many who appear righteous may be spiritually dead inside, and true light comes from a heart cleansed by God. Ultimately, he calls for a genuine relationship with Christ that leads to authentic witness and transformation.

Charles Finney addresses the issue of false professors in his sermon 'False Professors,' emphasizing that many individuals claim to fear God while actually serving their own idols and selfish interests. He illustrates how people may perform religious duties out of a fear of judgment rather than genuine devotion, and he challenges listeners to examine their true motivations and commitments. Finney categorizes various groups of people who, despite their outward religious practices, prioritize personal gain and comfort over the service of God and the salvation of souls. He calls for a radical re-evaluation of what it means to serve God, urging believers to make their lives a true reflection of their faith. Ultimately, he warns that mere profession without true service is hypocrisy.

Erlo Stegen emphasizes the transformative power of Jesus' healing, as demonstrated in the story of the leper who approached Jesus with faith. The leper, isolated and deemed unclean, found hope in Jesus' willingness to heal him, illustrating that true authority comes from living out one's teachings. Stegen warns against hypocrisy, urging believers to practice what they preach, as inconsistency can lead to a lack of credibility, especially with children. He draws parallels between leprosy and sin, highlighting that just as the leper needed Jesus for physical cleansing, so too do we need Him for spiritual healing. Ultimately, the sermon calls for believers to come to Jesus for deliverance from their own 'spiritual leprosy' and to live in the light of His truth.